It's the JOURNEY, Stupid!
OK olegt tells us:
Joe’s main difficulty with the concept of infinity is a failure to realize that infinity is a journey, not a destination.Yet my Einstein train blog makes it obvioulsy clear that I know that it is all about the journey. And by the way they keep saying "well it's infinity!" says that they are just looking at infinity as a destination.
AND on the journey down the number line a train picking up all non-negative integers will always have twice as many numbers as a train picking up all positive even numbers (going down the same number line). And that is always and forever-> meaning for the entire journey.
And that is why it's a good thing that numbers don't have any mass...